baber/WOPTO huggingface dataset:
Patent GB-528061-A (GB)
Title: Improvements in or relating to radio direction finding apparatus
IPC: G01S3/02
Filed: 1939-04-21
Abstract: 528,061. Directive wireless signalling. WILLANS, P. W., and PLESSEY CO., Ltd. April 21, 1939, No. 12064. [Class 40 (v)] Automatic gain control is applied through a pilot current to the amplifiers used in a directionfinding system for feeding a direct-reading indicator, such as a cathode ray tube. The signal voltages are applied to the two amplifiers 10, 11, together with a "pilot" frequency indicated at 14, and the output is passed through coils 16 to a directional indicator (not shown). The pilot frequency is also applied through a transformer 22 to the anodes of two gain-control valves 19, 20. Any variation in the gain of the amplifiers 10, 11 will produce an unbalanced voltage in a coil 18 which is coupled to the grids of the valves 19, 20. This, in combination with the pilot frequency on the anodes of those valves, produces a biasing voltage across the anode resistance 21. The latter is connected through leads 24, 25 respectively to the grids of the main amplifiers 10, 11 and serves to equalize the gain of both. Specification 385,982, (Group XXXVI), is referred to.
Patent GB-688397-A (GB)
Title: Improvements in or relating to clutch devices
Inventor: WATTS DOUGLAS HENRY
IPC: F16D27/118
Filed: 1950-05-15
Abstract: 688,397. Operating clutches. MINISTER OF SUPPLY. March 6, 1951 [May 15, 1950], No. 12084/50. Class 80 (ii). A worm gear 7 mounted on a driving shaft 2 engages a wheel 6 on a driven shaft 3 and has dogs 10, 11 at each end which engage either a dog member 12 on the driving shaft or a non- rotatable dog member 15. The clutching dog member 12 is slidably but non-rotatably connected with the shaft 2 by a pin-and-slot means 13, 14 and is engaged by a thrust member 20 actuated by the armature 22 of an electromagnet 23 through pins 21. The member 15 is normally urged, by a spring 19 acting on pins 16 integral with the member 15 and slidable in the shaft bearing 4, into engagement with the dogs 11 but is held out of engagement when the electromagnet 23 is energised by a sleeve 18 extending through the worm 7 between the members 12, 15.
Patent GB-1096437-A (GB)
Title: Improvements in or relating to butterfly valves
IPC: F16K1/226
Filed: 1965-03-23
Abstract: 1,096,437. Valves. FMC CORPORATION. March 23, 1965 [March 25, 1964], No. 12150/65. Heading F2V. A replaceable seat assembly in a butterfly valve comprises an annular seat 52 of compressible rubber provided with an internal uniform cylindrical seating surface 53 and an external surface 65, convexly curved in the axial direction, which is bonded to a pair of semi-cylindrical retainer members 86 which abut a pair of radially extending flanges 78 of the seat member 52 whereby this is compressed for insertion within the valve body shell 16. The member 52 is provided with flats 55, having streamlined lead-ins 59, to abut the flat ends 108, 109 of the butterfly disc 100 and outwardly directed annular flanges 75 at either end of member 52 are provided with beads 76 which project beyond the shell body 16 and are compressed to form a seal when the body 16 is bolted between pipe flanges. The body 16 may alternatively comprise two halves which are clamped around the seat member whereupon tongues (98) (Fig. 6, not shown), thereof project from cylindrical valve wall (19) into circumferentially extending grooves 96 around the retainers 86. Additional seals against leakage are provided by 0-rings 140 located in contact with the seat member between shoulders 70 thereof and shoulders on valve stems 116 and 118 which locate within enlargements 106, 107 on the valve disc 100 and are retained in position by roll pins (132) (Fig. 7, not shown), which pass through the upper and lower portion 25 and 26 of the valve body to tangentially engage grooves 121, 122 on the valve stems and are provided with a passage 151 to the grooves 121, 122 wherefrom leakage is indicated. Valve stem 116 locates within hexagonal socket 111 of the disc and an operating handle 160 is fixed on a square end 130 thereof and is provided on the underside with a lever operated detent (166) (Figs. 1 and 2, not shown), which is engageable within radially directed slots (34, 35) on a valve body flange 30 to lock the valve in closed and fully-open positions.
Patent GB-1351763-A (GB)
Title: Trimming resistance circuit
IPC: H05K3/34
Filed: 1971-04-29
Abstract: 1351763 Electric couplings BUNKER RAMO CORP 29 April 1971 [27 July 1970] 12212/71 Heading H2E [Also in Division H1] An integrated circuit package including a variable resistor comprises resistive and conductive tracks 36, 37, 38, 39 (Fig. 2) deposited, e.g. by screening or film evaporation, on a ceramic, e.g. alumina, substrate 26 and has terminal members 40 (Fig. 6) gripping the substrate to make electrical contact with the terminal portions 36a-36n of the conductive paths, the connections being completed by soldering. Central parallel resistive and conductive paths 39, 37 are bridged by a carbon or precious metal contact member 102 (Fig. 15) carried by member 100 on a plastics lead screw 86 held in a plastics insulating case 66. Bonding members 56, 58 formed of fibrous material and epoxytype adhesive in the same shape as the substrate are heat and pressure bonded to the upper and lower surfaces of the substrate such that the elements 46, 50 of the terminal members and the resistive paths 38 are embedded, a central aperture being provided in bonding member 56 to allow the contact member to contact the paths 39, 37. The completed device may be mounted on an integrated circuit card.
Patent GB-959761-A (GB)
Title: Manufacture of azodicarbonamide
IPC: C07C281/06
Filed: 1963-03-28
Abstract: Azodicarbonamide is produced by passing chlorine into an agitated aqueous suspension of hydrazodicarbonamide to which is added at least 0.01 parts of dissolved bromide ion per 100 parts of hydrazodicarbonamide.  The reaction may be performed at a temperature from 0 DEG C. to 90 DEG C. The source of bromide ion may be a metal bromide, e.g. sodium or potassium bromide.
Patent GB-166149-A (GB)
Title: Improvements in trench mortars and the like
IPC: F41F1/06
Filed: 1916-08-30
Abstract: 166,149. Newton, H. Aug. 30, 1916. Ordnance, muzzle-loading; design; pneumatic; chambers. - Relates to trench mortars and the like, and consists in placing the propelling- charge in a restricted combustion chamber from which the gases are emitted through one or more ports, the area of which is adjustable. In the construction shown in Figs. 2 and 3, the combustion chamber i has ports l adjustable in size. A baffle-plate n may be provided to prevent the gases from impinging directly on to the projectile. The charge is ignited by percussion mechanism m of rifle type. In a modification shown in Fig. 4, a longitudinal combustion chamber is provided with an outlet o, the charge being ignited at the outlet by a nozzle p through which the lighting- agent may be conducted. The lighting-charge may be carried on the projectile, or a simple trigger action may be arranged to effect the firing when the shell has reached a predetermined position in the bore. The combustion chamber may be formed in the base of the projectile instead of in the mortar. The mortar has an hemispherical end b fitting in a socket c of steel or aluminium and is trained and elevated by three guys and stretching-screws d. A stud f moves in a guide g to ensure uniform movement. Reference has been directed by the Comptroller to Specification 125,475.
Patent GB-700784-A (GB)
Title: Improvements in rock-drilling machines
IPC: B25B1/24
Filed: 1951-05-25
Abstract: 700,784. Drilling. GRAFER, A., and NUSSE, H. May 25, 1951 [Dec. 23, 1948], No. 12303/51. Class 83 (3) [Also in Group XXIII] A rock-drilling machine comprises a compressed-air, gear-type motor 3 for feeding a carriage 4 carrying a similar motor 2 which rotates the drill. The feed motor rotates a pinion engaging a rack 7 on a rail 1 on which the carriage runs. The rack 7 is slidably mounted and engages a gauge 24 to measure the drilling pressure. Both motors are reversible and are controlled by manually-operated valves. Compressed air or water is delivered to the drill-bit through a hollow rod 9.
Patent GB-569173-A (GB)
Title: An improved apparatus for acrobatic figures and the like
IPC: A63H13/12
Filed: 1943-07-29
Abstract: 569,173. Toys. McGOWAN, R. July 29, 1943, No. 12309. [Class 132 (iii)] An acrobatic toy comprises a base-board h to which is pivoted a jointed strut d, d<1> supporting a toy figure a which performs antics when the board h is manipulated. The toy can be inverted to form a swinging acrobatic toy. Alternatively, the swivel f may be fixed with the strut d upright, and a pin inserted in a hole i, whereupon the figure can be made to dance.
Patent GB-467941-A (GB)
Title: Improved ring-shaped reflector element for improving the luminosity of electric lamps
IPC: F21V7/00
Filed: 1936-04-30
Abstract: 467,941. Annular reflecting lenses. GUNSBOURG, A. April 30, 1936, No. 12333. [Class 75 (ii)] An annular reflector 1 made of transparent or translucent material has inner and outer coaxial surfaces of revolution which diverge downwardly, and is provided at its upper end with an integral collar 13 adapted to fit over an electric lamp bulb 2. The outer surface of the reflector is composed of a plurality of coaxial frusto-conical surfaces 3, 4, 5, and the inner surface is frusto-conoidal. The outer surface of the reflector and its collar may be coated with reflecting material. The annular element may be made of coloured glass and may have different degrees of transparency or coloration, and may be frosted in parts. Elements made of metal foil, asbestos, or other material may be inserted between the collar and lamp bulb to allow for expansion and contraction of the collar and bulb.
Patent GB-122999-A (GB)
Title: Improvements in Domestic Fireplaces.
Inventor: MENZIES COLIN
IPC: F24B1/18
Filed: 1918-07-31
Abstract: 122,999. Menzies, C. July 31, 1918. Open fire-places.- A domestic fire-place consists of a base part A, a jamb part B, and a pediment or cap C. The base A consists of a bowllike fire-basket A<2> with an aperture A<3> for admitting air and discharging ashes &c. the part B is of the section shown in Fig. 3, and forms with the wall an air-heating-space B<2>, air being supplied to this by a conduit B<3>, and emitted from it by gratings C' at the sides behind the cap or pediment C. The part C contains a semicylindrical damper or register C<3> adjustably pivoted at C<4> and movable relatively to a fixed semicylinder C<2>. In a modification, Figs. 8 and 10, the fire-place back consists of a boiler D with deep channel-like recesses D' forming heating- flues. The draught-regulator consists of a boxlike structure D<2> having therein two vanes D<3> fixed at right-angles to one another on a rotatable spindle D<4>. Fig. 11 shows a double fire-place adapted to be set in an opening through the wall divided the fire-place recesses of adjacent rooms. The two fire-baskets are mounted on screw-jacks F<1>, and support a central piece B of H-section horizontally formed in one piece.
Patent GB-215573-A (GB)
Title: A new or improved emergency braking system for motor road vehicles
IPC: B60R21/34
Filed: 1923-05-10
Abstract: 215,573. Aves, H. May 10, 1923. Addition to 193,534. Obstruction - removers and safety apptiances. - In emergency braking - apparatus as described in the parent Specification, the depression of the pedals 9 by the movement of the sliding rods 2, when the buffer bars 3 or 4 encounter an obstacle, is effected by the rotation of a shaft 10 having upstanding fingers 12 engaging the pedals. On rearward movement of the rods 2, a shaft 16 is rotated by the engagement of pins 21 with arms 17, 18 to effect the disengagement of a spring-pressed pawl 22 from an arm 28 also carried by the shaft, so that a weighted lever 27 held raised by the pawl is free to drop to rotate a shaft 13, and, through links 14, 15, 11 the shaft 16 to apply the brakes and disengage the clutch. Undesired release of the lever 27 due to vibration is prevented by providing the lever 18 with an arm 19 which carries a weight 20 and a transverse telescopic bar 26 prevents rotation of the rods 2, which might disengage the pins from the arms 17, 18. The members 12 may carry roller or slotted guides to engage the pedals 9, and the lever 27 is returned to position after the apparatus has been in use by a cable passing over the dash-board.
Patent GB-253686-A (GB)
Title: Improvements in or relating to receptacles adapted to retard the alteration in temperature of their contents
IPC: A47G23/04
Filed: 1925-05-14
Abstract: 253,686. Young, E. A., and Huston, R. E. May 14, 1025. Cold, and heat retaining vessels.-A receptacle in the form of an entrÚe dish, or of a suitable shape to contain tea, coffee, ice-cream or other substance, comprises a vacuum-jacketed container Fig. 3 and a similar cover, Fig. 2, there being annular recesses M, D filled with insulating material N, E, such as cork or asbestos, around the meeting faces of the rims. The cover has a depending flange F to fit within the top of the container. Distance-pieces 0, G are provided between the walls of the vacuum jackets, and the surface of the walls within the vacuum space may be coated with a non-corrosive substance.
Patent GB-150653-A (GB)
Title: Improvements in or relating to belt transmission
IPC: F16H7/14
Filed: 1919-06-12
Abstract: 150,653. White, A. E., (Chicago Flexible Shaft Co.). June 12, 1919. Tension and supporting arrangements.-In belt gearing, a bracket 2 supports a line driving-shaft 1 adjustable for alinement, and a driven shaft 13 adjustable to tension the belt 12. Bolts 4 for securing the bracket 2 to a post &c. W pass through vertical slots 3a so that the bracket may be adjusted vertically. The shaft 1 turns in a bearing sleeve 1<a> which has a spherical portion 1<b> seated between a block 5 and cap 6. Bolts 9 passing through a slot 8 in the bracket provide for horizontal adjustment of the shaft 1. The shaft 13, which is axially movable with fast and loose pulleys 14, 15 as described in Specification 14871/19 is supported in a slide 21 movable towards and from the shaft 1. A rib 25 projects from the slide 21 into a slot 24 in the bracket, and bolts 22 are provided for clamping. The slide 21 is moved by a screw 26.
Patent GB-366815-A (GB)
Title: Improvements in valves for gas meters
IPC: G01F3/22
Filed: 1931-04-29
Abstract: 366,815. Lift valves for gas meters.. VESTA APPARATE UND METALLWARENFABRIK GES., 26, Romintenerstrasse, and ARON, W., 94, Paulsbornerstrasse, Halensee, both in Berlin. April 29,. 1931, No. 12613. [Classes 54 and 135.] A shuttle lift valve for gas meters, designed to close noiselessly, comprises a thin plane flexible metal membrane 3 completely covered on one or both sides by leather or other soft facings 4, 41. Preferably the membrane 3 is ring shaped so that the valve may be flexibly connected to a spindle 2, permitting accurate seating when pressure is applied to the spindle 2. Two flanges 5, 5<1>, situated one a short distance on either side of the valve member, and locked to the spindle 2 by nuts, prevent undue flexure. Should long use distort the facings 4, 4<1>, then the flanges 5, 5<1>, being of greater diameter than the internal diameter of the annulus 3, move the latter to and from the valve seat.
Patent GB-378539-A (GB)
Title: Improvements in or relating to audio frequency amplifier arrangements
IPC: H03G9/10
Filed: 1931-04-29
Abstract: 378,539. Valve amplifying circuits. MARCONI'S WIRELESS TELEGRAPH CO., Ltd., Marconi House, Strand, London.- (Assignees of Roberts, W. van B. ; 155, Hodge Road, Princetown, New Jersey, U.S.A.) April 29, 1931, No. 12661. Convention date, April 29, 1930. [Class 40 (v).] In an audio frequency amplifier means are provided to control automatically the amplification and also the ratio of high to low frequency in accordance with the input. The Figure shows a three stage amplifier 62, 70, 81 in which the low note response is decreased with increase in input by decreasing the bias of valve 62 so that the choke L approaches saturation. The gain is simultaneously increased by increasing the screen grid voltage of valve 70. The voltage variations are effected by resistance 53 through which amplified, rectified and smoothed current from the input passes. Alternatively the pilot amplifier C is dispensed with and the voltage variations to effect the control are taken from resistance 76<1> instead of resistance 53. In a modification, Fig. 2 (not shown), separate amplifiers are used for the high and low frequencies and have different degrees of control applied to them by variation of the screen grid voltage of amplifying valves. In a further modification, Fig. 3 (not shown) a screen-grid valve is transformer coupled to the following amplifying valve and is shunted by a triode. The bias of this valve is controlled by the signal strength so that its impedance is reduced with low inputs thus reducing the gain and particularly the high audio frequency gain.
Patent GB-758969-A (GB)
Title: Water-soluble pyrazolone monoazo dye compositions
Filed: 1954-04-30
Abstract: 3 - Phenyl - 1 - p - sulphophenyl - 5 - pyrazolone is made by reacting the sodium salt of phenylhydrazine-p-sulphonic acid with ethyl benzoylacetate in the presence of calcium carbonate.  The compound is used as a dyestuff intermediate, cf. Group IV (c).ALSO:The invention comprises a dye composition comprising a solution in at least one polyethylene glycol of molecular weight of at least 1,000, e.g. 1,000-6,000, of a dye of formula <FORM:0758969/IV(c)/1> where R is a sulphonated aryl radicle, R1 is a chlorinated p - sulphophenyl radicle and R11 is a hydrocarbon radicle, or a water-soluble salt thereof.  Carbowax is a specified glycol. The compositions are used in the hand colouring of photographic relief images (see Group XX).  The preparation in conventional fashion of 4 - (2, 5 - dichloro - 4 - sulphophenylazo) - 3 - phenyl - 1 - p - sulphophenyl - and - 3 - methyl - 1, 71 - naphthalene - 11, 31 - disulphonic acids and a solution of the former and triethanolamine in a polyethylene glycol are described.
Patent GB-623552-A (GB)
Title: Materials for use as bearings and like rubbing contact surfaces
IPC: B22F3/26
Filed: 1946-04-26
Abstract: A material which may be used for the production of bearings and mechanical seals, comprises lead or a lead base alloy compounded but not alloyed with iron, steel, molybdenum or tungsten or one or more of the stable carbides, nitrides or silicides of metallic elements of the Groups 3, 4, 5 and 6 of the Periodic Table.  A lead base alloy is defined as a lead alloy containing up to 20 per cent by volume of an alloying ingredient which is preferably tin, indium thallium silver, or silver alloy.  In cases where the components do not form alloys even at high temperatures the powdered substances may be mixed and then heated to a temperature between the melting points of the components.  When the components may form alloys, the high melting component is powdered and then sintered to form a porous mass which is dipped into the molten low melting component, such process being preferably carried out in a reducing or neutral atmosphere.  The surface of the product may be modified, e.g. by means of alkalis which tend to remove tungsten, molybdenum, or tungsten carbide, or by acid which tends to remove lead or iron.
Patent GB-592137-A (GB)
Title: Improvements in audible signalling devices, particularly for fire alarm systems
IPC: G08B17/08
Filed: 1945-05-22
Abstract: 592,137. Pyrotechnic fire alarms. McLELLAN, W. May 22, 1945, No..1.2726. [Classes 9 (ii) and 47 (i)] An audible signalling device for fire alarms comprises a cartridge 1 containing a pyrotechnic whistling composition 3 ignited by temperatureresponsive means. This composition comprises 30 per cent sodium salicylate and 70 per cent potassium perchlorate and emits a whistling sound when it burns. One end of the cartridge is closed by a clay plug 2 and has bayonet fittings 13 to engage a bayonet slotted socket on a wall. The other end holds a layer of gunpowder 4 to ignite the whistling composition and a slow match 12 ignited from a tube 11 containing mercury fulminate. The fulminate is ignited from a friction device operated by a weight released when a wire supporting it parts, due to the action of fire. Interposed in the wire are discs joined by fusible material. Specification 565,509 is referred to.
Patent GB-851028-A (GB)
Title: High impact polyvinylchloride formulation
IPC: C08L23/28
Filed: 1959-04-15
Abstract: A composition comprises polyvinyl chloride and a halogenated derivative of butyl rubber, the latter being defined as a copolymer of (a) 85-99,5% of C4-C7 iso-olefin with (b) 0,5-15% of C4-C14 multiolefin containing one pair of conjugated double bonds.  The halogenated derivative may be present in a proportion of 0,5-50, preferably 1-40, particularly 3-30 parts by weight per 100 parts by weight of polyvinyl chloride.  It is preferred that (1) the halogenated derivative is a chlorinated butyl rubber containing at least 0,5 wt. per cent combined chlorine and not more than 1 atom thereof per double bond in the polymer; (2) the composition contains 0,5-5 parts of a stabiliser, such as dibutyl tin dilaurate, and 0,25-3 parts of a lubricant, such as stearic acid or N:N1-ethylenebisstearamide, per 100 parts by weight, of polyvinyl chloride.  The composition may be heated at 275-450 DEG F. for 0,1-100 minutes, preferably at 300-400 DEG F. for 1-30 minutes. Specified monomers are (a) isobutylene; (b) isoprene (preferred), butadiene, myrcene, piperylene and allo-ocimene.  Instead of polyvinyl chloride, vinyl chloride/acetate copolymer may be used.
Patent GB-734385-A (GB)
Title: Improvements in joints for asbestos-cement tubes suitable for conveying fluid
IPC: F16L21/08
Filed: 1953-05-08
Abstract: 734,385. Pipe joints; jointing tools. ETERNIT, [formerly SOC. PER AZIONI ETERNIT PIETRA ARTIFICIALE]. May 8, 1953 [Dec. 12, 1952], No. 12860/53. Class 99 (1). In a joint for asbestos cement pipes of the kind in which a U-section sealing ring 10 is located between a pipe 2 and a sleeve or socket 1, the flexible inner lip 11 of the ring is pressed by pipeline pressure into a rebate 24 formed in the end of the pipe. One sealing ring is employed in a bell-and-spigot joint. In the sleeve joint, as shown, a ring for each pipe is sprung into an annular recess 23. The sleeve may be in one piece, but to facilitate the assembly one of the rings may have a separate end portion 17 which screws into the main sleeve to confine the ring. The rings may be integrally connected between their outer limbs to form a resilient sleeve bridging the joint. The rings are first mounted in the sleeve, the pipe ends being tapered to facilitate assembly. A removable wooden guide 27, Fig. 8, may also be placed in the tube end 2. The tubes and sleeve are manipulated during assembly by a chain-type gripper. Grooves 9 in the pipes register with the sleeve ends to indicate the proper location of the sealing rings.